Replacement Shower Drain Cover
We just had our master shower stall retiled and I am looking for a replacement shower drain cover but I can't seem to find one that fits. I already checked out the shopping.com website recommended here. I can use either a 4" or 4 1/4" diameter cover but the holes are set 2 7/8" apart. It seems all the standard sizes are 4"D with 3 3/8" holes or 4 1/4"D with 2 5/8" holes. I can't find any covers that can be screwed in.
Can a snap-in cover be used in this situation? Or can a drain cover be glued or caulked in place in lieu of screwing it in? Should caulk be applied around the edge of the drain cover anyway after it has been installed? The guy who did the tiling said you cannot caulk the cover in place but I am not sure he is an expert. Any help would be appreciated.